//
//  WYXQuackBehavior.h
//  Design Patterns
//  呱呱叫的行为类
//  Created by ying on 2016/12/10.
//  Copyright © 2016年 ying. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface WYXQuackBehavior : NSObject

- (void)quack;

@end
